BUDI PUTRA JOHAN, S. A CORPUS-BASED ANALYSIS OF ENGLISH PAST PERFECT TENSE IN WRITTEN AND SPOKEN ENGLISH. PEOPLE: International Journal of Social Sciences, [S. l.], v. 3, n. 3, p. 624–643, 2017. DOI: 10.20319/pijss.2017.33.624643. Disponível em: https://grdspublishing.org/index.php/people/article/view/1078. Acesso em: 7 may. 2024.